Reversible internal combustion engine having improved fuel control means

ABSTRACT

In a reversible internal combustion engine having at least one cylinder, a crankshaft, a governor, and a starting control for determining engine starting in either forward or reverse direction, the provision of at least a pair of fuel injection pumps for the cylinder each having a fuel quantity control element, a single lobe pump actuating cam on the crankshaft, the cam and pumps being relatively arranged for cam actuation of one pump in each injection period of the engine operating in the forward direction and of the other pump in each injection period of the engine when operating in reverse direction, operating means between the pump control elements and the governor including linkage means settable to a first setting affording governor operation solely of the control element of said one pump, and to a second setting affording governor operation solely of the control element of said other pump, and means operated by the engine starting control for effecting said first or second setting of the linkage means correspondingly to forward or reverse engine operation.

FO/PWAPD 0 t Unite States Patent H 13,561,407

[72] Inventors Matthew L. Foreman 2,126,068 8/1938 Walti 123/41 Beloit, Wis.; 2,164,522 7/1939 Howard 123/41 Anker Anmnsen Merritt Island Fla; Primary Examiner-Wendell E. Burns John Dawds' Belmt An0rneyGeorge A. Woodruff [2!] Appl. No 850,498 [22] Filed Aug. 15, 1969 [45] Patented Feb. 9, 1971 ABSTRACT: In a reversible internal combustion engine hav- Assignee Fairbanks Morse ing at least one cylinder, a crankshaft, a governor, and a start- New York, NY. ing control for determining engine starting in either forward or a col'lwmfifln Delaware reverse direction, the provision of at least a pair of fuel injection pumps for the cylinder each having a fuel quantity control element, a single lobe pump actuating cam on the crankshaft,

the cam and pumps being relativel arran ed for cam actua- [54] REVERSIBLE WERNAL E tion of one pump in each injectibn per iod of the engine HAVHFG IMPRO ED F operating in the forward direction and of the other purnpjn m Clams 2 Drawing Figs each injection period of the engine when operating in reverse [52] U.S. Cl 123/41 direction, operating means between the pump control elea F02! 27/00 ments and the governor including linkage means settable to a [50] Field of Search 123/41, first setting affording governor operation solely of the control 41E, 179 (Cursory), 139 (Cursory), 97 (Cursory) element of said one pump, and to a second setting affording governor operation solely of the control element of said other References Cited pump, and means operated by the engine starting control for UNITED STATES PATENTS effecting said first or second setting of the linkage means cor- 2,090,735 8/1937 Ramstad 123/41 p ng y to forward or reverse engine Operation.

FULL R/EL REVERSIBLE INTERNAL COMBUSTION ENGINE HAVING IMPROVED FUEL CONTROLMEANS This invention relates to internal combustion engines of reversible character, and more particularly to improved fuel control provisions for such engines.

A principal object of the invention is to afford for reversible engines, an improved and simplified fuel control arrangement which includes in respect to each cylinder, separate fuel injection pumps each having a fuel quantity control element, and an engine crankshaft mounted cam common to the separate pumps, wherein the cam and pumps are related for timed cam actuation of one pump to effect fuel injection during forward engine operation and for timed cam actuation of the other pump to effect fuel injection during reverse engine operation.

Another object is to provide an improved and simplified fuel control arrangement having separate fuel injection pumps and a crankshaft mounted pump actuating cam as aforesaid, which further includes an engine driven governor and operating means between the governor and the fuel quantity control elements of the injection pumps, wherein the operating means is conditionable selectively in accordance with the desired direction of engine operation, for effecting governor operation solely of the control element of the aforesaid one pump during forward engine operation, and for effecting governor operation solely of the control element of the aforesaid other pump during reverse engine operation.

The foregoing and other objects will appear from the following description of embodiments of the invention as such are exemplified in the accompanying drawing, wherein:

FlG. l is a schematic showing of a presently preferred embodiment of the invention, and 4 FIG. 2 illustrates schematically another embodiment of the invention.

While the present improvements are applicable to various forms of single and multicylinder engines of reversible, fuel injection character, for the purpose of present illustration the invention is shown in connection with a reversible engine of op posed piston type, and in respect to one cylinder thereof indicated at in the schematic view of FIG. 1. Reciprocable in cylinder 10 are opposed pistons 11 and 12, piston 11 being connected to a main crankshaft 14 by connecting rod 15, and piston 12 to a second crankshaft 16 through a rocker linkage indicated generally at 18. Crankshafts l4 and 16 are interconnected for conjoint rotation, by gearing or other suitable means not shown but indicated by the broken line 19. Cylinder air ports 20 for the supply of scavenging and combustion air are controlled by piston 11, while the exhaust ports 22 are controlled by piston 12. 1n the engine example illustrated, the full travel of piston 12 is approximately one-half that of piston 11, as such is determined by the crankshaft l6 and rocker linkage 18.

Mounted in fixed relation on the crankshaft 16 is a cam 23 having a single cam lobe 24 of symmetrical profile, the zone of the crankshaft containing thecam being offset for clarity of disclosure. Cam 23 is provided for operating a pair of fuel injection pumps 26 and 27 arranged adjacently to and in relatively spaced positions transversely of the crankshaft 16 in the region of the cam, the pumps affording fuel supply to the cylinder combustion space 28 through suitable cylinder injection valves (not shown). As here illustrated the injection pumps 26 and 27 are of reciprocal plunger type wherein the plunger is angularly adjustable for varying fuel quantity delivery, with plunger adjustments effected in usual manner as by a fuel quantity control element or rack. Thus pump 26 has a fuel quantity control element 30 normally biased to a no-fuel position as by spring 31, and pump 27 the fuel quantity control element 32 normally biased by spring 34 to a no-fuel position.

Cam actuation of the injection pumps is attained through a pair of rocker members 35 and 36 each pivotally mounted on a common axis at 37. Rocker 35 supports a cam follower roller 38 and includes an abutment 39 inactuating relation to the plunger stem 40 of injection pump 26. The other rocker 36 similarly supports a cam follower roller 42 and includes an abutment 43 in actuating relation to the plunger stem 44 of injection pump 27.

As appropriately indicated in the view of FIG. 1, counterclockwise rotation of crankshaft 16 represents forward operation of the engine, while clockwise crankshaft rotation represents engine operation in reverse. Fueling of the engine in forward operation is effected by cam actuation of the in jection pump 26, and for reverse engine operation by cam actuation of the injection pump 27, with fuel quantity control regulated in each case by the engine governor through means to be described hereinafter. ln the present example, timing of fuel injection in the engine fueling cycle or period is the same for either direction of engine operation, and is attained by angularly locating or setting cam 23 on crankshaft 16 such that its cam lobe 24 will be centered relative to the cam followers 38 and 42 when the engine pistons 11 and 12 are at inner dead center, as this is shown in FIG. 1. Thus it will appear that in forward (counterclockwise) rotation of cam 23, the cam lobe 24 will operate pump 26 for fuel injection as the engine pistons 11 and 12 approach inner dead center in forward operation, while in reverse (clockwise) rotation of the cam 23, cam lobe 24 will operate pump 27 for fuel injection as the engine pistons approach inner dead center in reverse engine operation. Moreover, desired timing in respect to the beginning of pump plunger displacement by the cam lobe 24, for either direction of engine operation, is attained through selection of the arcuate extent of the cam lobe and the distance of thecam follower rollers 38 and 42 from a center line through the axis of crankshaft 16 and the midpoint of the cam lobe when centered relative to the follower rollers, such distance being the same for both rollers.

It will be appreciated from the foregoing that the fuel pump operating arrangement in application to a reversible opposed piston engine, is readily adaptable to attain desired fuel timing where the crankshaft phase setting is such as to provide either a predetermined desired crank angle lead of one piston over the other piston (the same lead for forward and reverse operation), or no piston lead at all. For crankshaft phase setting, conventional setting means (not shown) may be incorporated in the drive interconnection 19 between the crankshafts, with the setting means controlled by the reversing control mechanism of the engine,

Referring now to the engine governor control of the fuel quantity control elements of the injection pumps, suitably mounted on the engine are spaced, parallel rock shafts 50 and 51. Fixed to shaft 50 is a lever 52 extending to operating connection at 54 with the control element 30 of injection pump 26, while a like lever 55 is fixed to shaft 51 and connected at 56 to the control element 32 of injection pump 27. Shaft 50 carries a further lever 58 having a cam follower roller 59 engaging one side of a cam member 60 on a stub shaft 62, and shaft 51 supports a like lever 63 having cam follower roller 64 engaging an opposite side of cam member 60. Follower rollers 59 and 64 are maintained in cam engagement in any suitable or desired manner here represented for example only by the tension spring 66 between the levers 58 and 63. Stub shaft 62 suitably supported for rocking movement, carries a lever arm 67 to which is pivotally connected one end of a link element 68. On the other end of link 68 is a pin of follower element 70 which rides in an arcuate slot 71 provided in a member 72, the latter being pivotally supported at 73. Slot 71 extends an equal distance on each side of the pivot point 73 and has its arcuate axis intersecting the axis of pivot 73. Carried by member 72 is a lever arm 74 the outer end of which is connected by link means 75 to the output arm 76 of an engine driven governor 77.

The engine is provided with starting means such as a conventional compressed air starting system (not shown) which is under the control of a starting and reverse control lever 78 having the engine Stop" position shown in HO. 1 and movable selectively therefrom to the indicated Forward" position for establishing engine starting and running in the forward direction, and to the indicated Reverse" position for effecting engine starting and running in the reverse direction. A connection such as the link 79 interconnects the starting lever 78 and the link 68 such that with lever 78 in the Stop position, link 68 will be located to have its pin 70 centered in the slot 71 as shown, wherein the pin axis is coincident with the axis of pivot 73 supporting member 72.

Cam member 60 provides a single cam lobe 80 of symmetrical profile, and is of uniform radius over the remainder of its peripheral extent. In stub shaft mounted position with the link member 68 located by control lever 78 in the Stop position, wherein pin 70 is centered in slot 71, the angular location of the cam on the stub shaft is such as to have its cam lobe 80 centered between the follower rollers 59 and 64. In that initial cam position, follower 59 engages the cam at a point on its uniform radius surface near the base end or beginning point of rise of the cam lobe 80, while follower 64 engages the cam in like position adjacent the opposite base end of cam lobe 80. In such positions of the followers, the rock shafts 50 and 51 and their respective levers 52 and 55 are disposed in initial positions wherein the spring biased fuel quantity control elements 30 and 32 of pumps 26 and 27 are in the no-fuel positions.

In a multicylinder engine, each cylinder will have associated therewith fuel injection pumps 26 and 27 and a crankshaft mounted cam 23 in the same arrangement as illustrated in FIG. 1. The cams 23 appropriately spaced along the crankshaft 16, will of course occupy different relative angular positions in accordance with the cylinder firing order of the given engine to which the present improvements are applied. Further, the rock shafts 50 and 51 will be extended to span all of the cylinders, with lever connections to the fuel quantity control elements of the injection pumps at each cylinder, corresponding to the connections illustrated in FIG. 1.

Referring now to the operation of the improved fuel control embodiment as illustrated in FIG. 1, movement of the engine starting lever 70 to the Forward position establishes engine start in the forward direction (a single cylinder engine including known means to bar-over the crankshafts to one side or the other of the dead center for forward or reverse starting). Lever 78 so positioned, effects through link 79 angular shift of link 68 to the right as viewed in FIG. 1, thereby locating the link pin 70 at the right hand end of slot 71 in member 72. With following governor operation to displace its output lever 76 toward Full Fuel position, the resulting pivotal displacement of member 72 in the counterclockwise direction as viewed in FIG. 1, effects through link 68, arm 67 and stub shaft 62 a like counterclockwise turning of the cam 60. Cam lobe 80 then engaging the roller 59, produces through lever 58 turning of rock shaft 50 in the direction to effect by its lever 52, displacement of the fuel quantity control element 30 of injection pump 26 from its no-fuel position, whereby to condition pump 26 for fuel injection consequent to engine timed pump operation by the crankshaft cam 23. Thereafter during normal forward engine operation, the governor will vary the position of fuel quantity control element 30 for more or less fuel, in accordance with the fuel demands of the engine. During such forward start and running of the engine, cam follower 64 rides only on the uniform radius portion of cam member 60, and hence rock shaft 51 remains in its initial position wherein the fuel quantity control element 32 of injection pump 27 is in its no-fuel position. Thus, even though the crankshaft cam 23 operates the plunger of pump 27, no fuel will be delivered by this pump.

Movement of start lever 78 from its Stop" position to R- everse position where reverse operation of the engine is desired, displaces link 68 to locate its pin 70 at the left hand end of slot 71 in member 72. counterclockwise turning of pivotal member 72 by the governor arm 76 in movement toward full-fuel position, now produces through link 68 and arm 67, clockwise turning of the stub shaft 62 and cam 60. Thus the result is the opposite of that above described for forward operation, the governor responsive cam 60 now acting on roller 64 to effect through rock shaft 51 and its lever 55, corresponding fuel quantity control displacements of the pump control element 32 of injection pump 27. In reverse operation,- the crankshaft cam 23 actuates pump 27 for timed fuel injection to the cylinder, while pump 26 remains in nofuel delivery condition since roller 59 then engages only the uniform radius portion of cam 60.

FIG. 2 illustrates another embodiment of the invention. and in this view those parts of the arrangement which remain unchanged over the illustration of FIG. 1 are given the same reference characters. According to the modification, a pair of reciprocable plunger type fuel injection pumps 126 and 127 are located adjacent crankshaft 16 such that pump 126 has its plunger stern 140 extending radially of the crankshaft and sup porting a cam follower roller 138 engaging cam 23, while pump 127 likewise has its plunger stem 144 radially of the crankshaft and carrying cam follower roller I42 engaging cam 23. The pumps thus are angularly spaced apart to an extent such that the angle L between the longitudinal axes of the plunger stems is in the range of 30 to 35 this angular relationship providing substantially the same fuel injection timing relationship between the cam lobe 24 and the cam follower rollers as obtains in the embodiment of FIG. 1.

Pump 126 includes fuel quantity control element 130 biased by spring 131 to no-fuel position, while pump 127 similarly includes fuel quantity control element 132 biased by spring 134 to no-fuel position. The pumps in this embodiment are relatively arranged such that the control elements project toward each other, with their terminal ends spaced apart to receive therebetween an actuating lever fixed on a rock shaft 101. Shaft 101 suitably supported on the engine, extends to connection by lever arm 67 with the link member 68 in the same relation thereto as obtains for the stub shaft 62 in FIG. lQThus when the member 68 is in initial position (its pin 70 at the midpoint of slot 70 in member 72), shaft 101 will locate lever 100 in centered position between the control elements and 132. It will be appreciated of course, that in a multicylinder engine where a pair of injection pumps related as shown in FIG. 2, are provided for each cylinder, the shaft 101 will be extended to span all cylinders and provide an actuatinglever 100 for each pump pair.

The operation of the FIG. 2 embodiment is the same as that of the FIG. 1 embodiment. Thus in forward engine operation the governor acting through member 72, link 68 and arm 67 will rock the shaft l01in the direction to actuate only the control element 130 of pump 126, while in reverse engine operation the governor will rock shaft 101 in the opposite direction to actuate only the control element 132 of pump 127.

Having now described and illustrated two embodiments of the present invention, it is to be understood that each is susceptible to various modifications without departing from the scope of the invention as hereinafter claimed.

We claim:

1. In a reversible engine having a cylinder, a crankshaft,.a pair of fuel injection pumps for the cylinder, each pump including a fuel quantity control element, and an engine driven governor, the improvement therein comprising:

a. pump actuating cam means on said crankshaft, common to the injection pumps,

b. operating means between said governor and said control elements of the injection pumps, and

c. said operating means being adjustable selectively to a first condition affording governor operation solely of the control element of one injection pump of said pair, and to a second condition affording governor operation solely of the control element of the other injection pump of said pair.

2. In a reversible engine having a cylinder, a crankshaft, a pair of fuel injection pumps for the cylinder, each pump including a fuel quantity control element, and an engine driven governor, the improvement therein comprising:

a. pump actuating cam means on said crankshaft, common to the injection pumps,

b. operating means between said. governor andsaid control elements of the injection pumps,

c. said operating means including linkage means settable to one setting affording governor operation solely of the control element of one injection pump of said pair, and to governor, and an engine starting control member movable to, one position for determining engine starting in forward direction and to a second position for determining engine starting in the reverse direction, the improvement therein comprising:

a. pump actuating cam means on said crankshaft, common to the injection pumps, 7 I

b. operating means between said governor and said control elements of the injection pumps,

c. said operating means including linkage means settable to one setting afiording governor operation solely of the control element of one injection pump, and to a second setting affording governoroperation solely of thecontrol element of the other injection pump, and

d. a connection between said linkage means and the said engine starting control member for effecting in said one position of the control member said one settingof the linkage means, andin said second position of the. control member said second setting of the linkage means.

4. in a reversible engine having a cylinder, a crankshaft, at least two fuel injection pumps for, the cylinder, each pump including a fuel quantity control element, and an engine driven governor, the improvement therein comprising:

a. pump actuating cam means on the crankshaft, common to the injection pumps,

a cammingmember mounted for angular movement in either direction from an initial position,

c. an adjustably settable operating connection between the governor and said eammingrnember, operable in a first setting to effect governor responsive angular movement of the camming member in one direction relative to its said initial position, and operable in a second setting to effect governor responsive angular movement of the camming member in the opposite direction relati e to its said initial position, 1

d. a first operating means between the control element of one injection pump and said camming member, effective nection for efiecting selectively, said first and second settings thereof.

5. lna reversible engine having a cylinder, a crankshaft, at least two fuel injection pumpsfor the cylinder, each pump including a fuel quantity control element, an engine driven governor, and an engine starting control membermovable to one position for determining engine starting in forward direction and to a second position for determining engine starting in the reverse direction, the improvement therein comprising:

a. pump actuating cam means on said crankshaft, commo to the' injection pumps,

b. a camming member mounted for angular movement in either direction from an initial position,

c. an adjustably settable operating connection betweenthe governor and said camming member, operable in a first setting to effectgovemor responsive angular movement of the camming member'inone direction relative to its said initial position, and operable in a second setting to cffeet governor responsive angular movement of the camming meniber in the opposite direction relative to its said initial position,

d. a first operating means between the control element of one injection pump and said camming member, effective in response to angular movement of the camming member in said one direction for operating said control element,

e. a second operating means between the control element of the other injection pump and said camming member, effective in response to angular movement of the camming member in said opposite direction for operating the control element of said other injection pump, and

f. means between said adjustably settable operating connection and said engine starting control member for effecting in said one position of the latter said first setting of said operating connection, and in said second position of the control member said second setting of said operating connection.

6. In a reversible engine having a cylinder, a crankshaft, and an engine driven governor, the improvement therein comprising;

a. a pair of plunger type fuel injection pumps for the cylinder, each having a reciprocable fuel plunger and a fuel quantity control element projecting laterally from the pump, g

b. said injection pumps being arranged relatively adjacent to each other and to said crankshaft, each in a position having its plunger axis radially of the crankshaft and its con- 1 ,trol element projecting in spaced opposed relation to the control element of the other pump,

c. a plunger actuating cam on said crankshaft common to the plungers of said injection pumps,

d. a rock shaft having a lever extending between said spaced opposed control elements and being equidistant from the control elements in an initial angular position of the rock shaft, effective for lever operation of one control element consequent to turning of the rock shaft in one direction from its initial angular position, and for lever operation of the other control element consequent to rock shaft turning in the opposite direction from its initial angular position, 7

e. an adjustably settable operating connection between said governor and said rock shaft, operable in a first setting thereof to effect governor responsive turning of the rock shaft in said one direction, and in a second setting thereof to effect governor responsive turning of the rock shaft in said opposite direction, and

f. means in control of said adjustably settable operating connection for effecting selectively, said first and second settings thereof.

7. In a reversible engine having a cylinder, a crankshaft, an engine driven governor, and an engine starting control member movable to one position for determining engine starting in forward direction and to a second position for determining engine-starting in the reverse direction, the improvement therein comprising:

a. a pair of plunger type fuel injection pumps for the cylinder, each having a reciprocable fuel plunger and a fuel quantity control element projecting literally from the pump,

b. said injection pumps being arranged relatively adjacent to each other and to said crankshaft, each in a position having its plunger axis radially of the crankshaft and its control element projecting in spaced opposed relation to the control element of the other pump,

c. a plunger actuating cam on said crankshaft common to the plungers of said injection pumps,

. a rock shaft having a lever extending between said spaced opposed control elements and being equidistant from the control elements in an initial angular position of the rock shaft, effective for lever operation of one control element consequent to turning of the rock shaft in one direction from its initial angular position, and for lever operation of the other control element consequent to rock shaft turning in the opposite direction from its initial angular position,

. an adjustably settable operating connection between said governor and said rock shaft, operable in a first setting thereof to effect governor responsive turning of the rock shaft in said one direction, and in a second setting thereof to effect governor responsive turning of the rock shaft in said opposite direction, and

means interconnecting said engine starting control member and said adjustably settable operating connection for effecting in said one position of the control member said first setting of the operating connection, and in said second position of the control member said second setting of the operating connection.

In a reversible engine having a cylinder, a crankshaft, and

an engine driven governor, the improvement therein comprising:

cam means on the crankshaft having a single symmetrical cam lobe,

a pair of fuel injection pumps for said cylinder, relatively spaced transversely of the crankshaft in positions for actuation by said cam means,

. said cam means being located angularly on the crankshaft such as to effect in forward rotation of the crankshaft cam lobe actuation of one injection pump for cylinder fuel injection in each fueling cycle of the engine when operating in the forward direction, and to effect in reverse crankshaft rotation cam lobe actuation of the other injection pump for cylinder fuel injection in each fueling cycle of the engine when operating in the reverse direction,

. said injection pumps each including a fuel quantity control element,

. operating means between said governor and the control elements of said injection pumps,

said operating means including linkage means settable to one setting affording governor operation solely of the control element of said one injection pump, and to a second setting affording governor operationsolely of the control element of said other injection pump, and

means effective in forward engine operation to set said linkage means in said one setting thereof, and effective in reverse engine operation to set said linkage means in said second setting thereof.

9. In a reversible engine having a cylinder, a crankshaft, an engine driven governor, and an engine starting control member movable to one position for determining engine starting in forward direction and to a second position for determining engine starting in the rev e r direction, the improvement therein comprising:

a. cam means on the crankshaft having a single symmetrical cam lobe,

a pair of fuel injection pumps for said cylinder, relatively spaced transversely of the crankshaft in positions for actuation by said cam means,

. said cam means being located angularly on the crankshaft such as to effect in forward rotation of the crankshaft cam lobe actuation of one injection pump for cylinder fuel injection in each fueling cycle of the engine when operating in the forward direction, and tofeffect in reverse crankshaft rotation cam lobe actuation of the other injection pump for cylinder fuel injection in each fueling cycle of the'engine when operating in the reverse direction,

. said injection pumps 'each including a fuel quantity control element,

e. operating means between said governor and the controlv elements of said injection pumps,

said operating means including linkage means settable to one setting affording'governor operationsolely of the control element of said one injectionpump, and to a second setting affording governoroperation solely of the control element of said other injection pump, and g. a connection between said linkage means and said engine spaced transversely of said one crankshaft in positions for actuation by said cam means,

c. said injection pumps each including a fuel quantity con trol element,

d. operating means between said governor and said injection pump control elements, and

c. said operating means being adapted and arranged to be conditionable for determining selectively, governor operation of the control element of one injection pump in forward engine operation and governor operation of the control element of the other injection pump in reverse operation of the engine. 

1. In a reversible engine having a cylinder, a crankshaft, a pair of fuel injection pumps for the cylinder, each pump including a fuel quantity control element, and an engine driven governor, the improvement therein comprising: a. pump actuating cam means on said crankshaft, common to the injection pumps, b. operating means between said governor and said control elements of the injection pumps, and c. said operating means being adjustable selectively to a first condition affording governor operation solely of the control element of one injection pump of said pair, and to a second condition affording governor operation solely of the control element of the other injection pump of said pair.
 2. In a reversible engine having a cylinder, a crankshaft, a pair of fuel injection pumps for the cylinder, each pump including a fuel quantity control element, and an engine driven governor, the improvement therein comprising: a. pump actuating cam means on said crankshaft, common to the injection pumps, b. operating means between said governor and said control elements of the injection pumps, c. said operating means including linkage means settable to one setting affording governor operation solely of the control element of one injection pump of said pair, and to another setting affording governor operation solely of the control element of the other injection pump of said pair, and d. means in control of said linkage means for effecting said one and another setting thereof.
 3. In a reversible engine having a cylinder, a crankshaft, at least two fuel injection pumps for the cylinder, each pump including a fuel quantity control element, an engine driven governor, and an engine starting control member movable to one position for determining engine starting in forward direction and to a second position for determining engine starting in the reverse direction, the improvement therein comprising: a. pump actuating cam means on said crankshaft, common to the injection pumps, b. operating means between said governor and said control elements of the injection pumps, c. said operating means including linkage means settable to one setting affording governor operation solely of the control element of one injection pump, and to a second setting affording governor operation solely of the control element of the other injection pump, and d. a connection between said linkage means and the said engine startIng control member for effecting in said one position of the control member said one setting of the linkage means, and in said second position of the control member said second setting of the linkage means.
 4. In a reversible engine having a cylinder, a crankshaft, at least two fuel injection pumps for the cylinder, each pump including a fuel quantity control element, and an engine driven governor, the improvement therein comprising: a. pump actuating cam means on the crankshaft, common to the injection pumps, b. a camming member mounted for angular movement in either direction from an initial position, c. an adjustably settable operating connection between the governor and said camming member, operable in a first setting to effect governor responsive angular movement of the camming member in one direction relative to its said initial position, and operable in a second setting to effect governor responsive angular movement of the camming member in the opposite direction relative to its said initial position, d. a first operating means between the control element of one injection pump and said camming member, effective in response to angular movement of the camming member in said one direction for operating said control element, e. a second operating means between the control element of the other injection pump and said camming member, effective in response to angular movement of the camming member in said opposite direction for operating the control element of said other injection pump, and f. means in control of said adjustably settable operating connection for effecting selectively, said first and second settings thereof.
 5. In a reversible engine having a cylinder, a crankshaft, at least two fuel injection pumps for the cylinder, each pump including a fuel quantity control element, an engine driven governor, and an engine starting control member movable to one position for determining engine starting in forward direction and to a second position for determining engine starting in the reverse direction, the improvement therein comprising: a. pump actuating cam means on said crankshaft, common to the injection pumps, b. a camming member mounted for angular movement in either direction from an initial position, c. an adjustably settable operating connection between the governor and said camming member, operable in a first setting to effect governor responsive angular movement of the camming member in one direction relative to its said initial position, and operable in a second setting to effect governor responsive angular movement of the camming member in the opposite direction relative to its said initial position, d. a first operating means between the control element of one injection pump and said camming member, effective in response to angular movement of the camming member in said one direction for operating said control element, e. a second operating means between the control element of the other injection pump and said camming member, effective in response to angular movement of the camming member in said opposite direction for operating the control element of said other injection pump, and f. means between said adjustably settable operating connection and said engine starting control member for effecting in said one position of the latter said first setting of said operating connection, and in said second position of the control member said second setting of said operating connection.
 6. In a reversible engine having a cylinder, a crankshaft, and an engine driven governor, the improvement therein comprising: a. a pair of plunger type fuel injection pumps for the cylinder, each having a reciprocable fuel plunger and a fuel quantity control element projecting laterally from the pump, b. said injection pumps being arranged relatively adjacent to each other and to said crankshaft, each in a position having its plunger axis radially of the crankshaft and its control element projecting in spaceD opposed relation to the control element of the other pump, c. a plunger actuating cam on said crankshaft common to the plungers of said injection pumps, d. a rock shaft having a lever extending between said spaced opposed control elements and being equidistant from the control elements in an initial angular position of the rock shaft, effective for lever operation of one control element consequent to turning of the rock shaft in one direction from its initial angular position, and for lever operation of the other control element consequent to rock shaft turning in the opposite direction from its initial angular position, e. an adjustably settable operating connection between said governor and said rock shaft, operable in a first setting thereof to effect governor responsive turning of the rock shaft in said one direction, and in a second setting thereof to effect governor responsive turning of the rock shaft in said opposite direction, and f. means in control of said adjustably settable operating connection for effecting selectively, said first and second settings thereof.
 7. In a reversible engine having a cylinder, a crankshaft, an engine driven governor, and an engine starting control member movable to one position for determining engine starting in forward direction and to a second position for determining engine starting in the reverse direction, the improvement therein comprising: a. a pair of plunger type fuel injection pumps for the cylinder, each having a reciprocable fuel plunger and a fuel quantity control element projecting literally from the pump, b. said injection pumps being arranged relatively adjacent to each other and to said crankshaft, each in a position having its plunger axis radially of the crankshaft and its control element projecting in spaced opposed relation to the control element of the other pump, c. a plunger actuating cam on said crankshaft common to the plungers of said injection pumps, d. a rock shaft having a lever extending between said spaced opposed control elements and being equidistant from the control elements in an initial angular position of the rock shaft, effective for lever operation of one control element consequent to turning of the rock shaft in one direction from its initial angular position, and for lever operation of the other control element consequent to rock shaft turning in the opposite direction from its initial angular position, e. an adjustably settable operating connection between said governor and said rock shaft, operable in a first setting thereof to effect governor responsive turning of the rock shaft in said one direction, and in a second setting thereof to effect governor responsive turning of the rock shaft in said opposite direction, and f. means interconnecting said engine starting control member and said adjustably settable operating connection for effecting in said one position of the control member said first setting of the operating connection, and in said second position of the control member said second setting of the operating connection.
 8. In a reversible engine having a cylinder, a crankshaft, and an engine driven governor, the improvement therein comprising: a. cam means on the crankshaft having a single symmetrical cam lobe, b. a pair of fuel injection pumps for said cylinder, relatively spaced transversely of the crankshaft in positions for actuation by said cam means, c. said cam means being located angularly on the crankshaft such as to effect in forward rotation of the crankshaft cam lobe actuation of one injection pump for cylinder fuel injection in each fueling cycle of the engine when operating in the forward direction, and to effect in reverse crankshaft rotation cam lobe actuation of the other injection pump for cylinder fuel injection in each fueling cycle of the engine when operating in the reverse direction, d. said injection pumps each including a fuel quantity control element, e. operating means betweEn said governor and the control elements of said injection pumps, f. said operating means including linkage means settable to one setting affording governor operation solely of the control element of said one injection pump, and to a second setting affording governor operation solely of the control element of said other injection pump, and g. means effective in forward engine operation to set said linkage means in said one setting thereof, and effective in reverse engine operation to set said linkage means in said second setting thereof.
 9. In a reversible engine having a cylinder, a crankshaft, an engine driven governor, and an engine starting control member movable to one position for determining engine starting in forward direction and to a second position for determining engine starting in the reverse direction, the improvement therein comprising: a. cam means on the crankshaft having a single symmetrical cam lobe, b. a pair of fuel injection pumps for said cylinder, relatively spaced transversely of the crankshaft in positions for actuation by said cam means, c. said cam means being located angularly on the crankshaft such as to effect in forward rotation of the crankshaft cam lobe actuation of one injection pump for cylinder fuel injection in each fueling cycle of the engine when operating in the forward direction, and to effect in reverse crankshaft rotation cam lobe actuation of the other injection pump for cylinder fuel injection in each fueling cycle of the engine when operating in the reverse direction, d. said injection pumps each including a fuel quantity control element, e. operating means between said governor and the control elements of said injection pumps, f. said operating means including linkage means settable to one setting affording governor operation solely of the control element of said one injection pump, and to a second setting affording governor operation solely of the control element of said other injection pump, and g. a connection between said linkage means and said engine starting control member for effecting in said one position of the control member said one setting of the linkage means, and in said second position of the control member said second setting of the linkage means.
 10. In a reversible engine having at least one cylinder, opposed pistons in the cylinder, a pair of interconnected crankshafts each operatively connected to one of the pistons, and an engine speed responsive governor, the improvement therein comprising: a. cam means on one of said crankshafts having a single symmetrical cam lobe, b. a pair of fuel injection pumps for said cylinder, relatively spaced transversely of said one crankshaft in positions for actuation by said cam means, c. said injection pumps each including a fuel quantity control element, d. operating means between said governor and said injection pump control elements, and e. said operating means being adapted and arranged to be conditionable for determining selectively, governor operation of the control element of one injection pump in forward engine operation and governor operation of the control element of the other injection pump in reverse operation of the engine. 